The need for paper industry paper industry conversion of coal-fired boilers to gas boiler is a boiler equipment industry needs is more important, because a lot of links to the papermaking process requires a lot of steam drying, stereotypes and so on. However, along with the national policy of environmental protection departments to ban coal-fired boilers, and now more and more manufacturers have to use coal-fired boilers to coal-fired boilers upgrading or purchasing a new low - NOx emissions. Paper mill boilers from coal to gas fired boiler is an important direction of current reform, is one more type of enterprise transformation, especially in the area more natural gas, coal into gas boiler is the main way. 1, in order to transform mechanization layered fired boiler gas boiler, you should first remove the front arch and a rear arch, while increasing the bottom heating surface, instead grate, grate to prevent overheating, combustion; 2, through the furnace heat transfer calculation methods determining the size of the boiler, furnace flame center position, and then pouring furnace work. In order to avoid the center position after arch boiler tubes, based on the original slope of the original arch made pipe. 3, the furnace in order to prevent an explosion, when the coal-fired boiler furnace gas is substituted, or when fuel not atomized combustion gases in the furnace incomplete combustion or heating surface of the end of the furnace, a fire or explosion occurs, should be mounting the appropriate parts of the boiler explosion vent, and to increase the ignition and flame failure protection program control to automatic control means, to ensure safe operation of the boiler. 4, is closely related to the selection and arrangement of the burner and furnace, the filling degree of the flame in the furnace should preferably not to form a dead air. Gas burner arrangement considered reasonable and piping layout, easy operation, maintenance and inspection.

New coal fire late, often appear off the fire bed fire, fire away from coal gate about 0.6 ~ 1.Om, burning furnace is not strong, high ash carbon content. For existing furnace arch structural problems, from improving fuel fire conditions, improve furnace temperature begin to transform the boiler. After the furnace arch after the transformation, the people stove fuel from coal gate 0 · 3mRP fire, the fire bed combustion intense flame full of good, strong rotation. Since lowering the front arch, the arch extended, reduced to about 1 2 throat formed between the arch of the original pitch. Where the enhanced mixing flow disturbances, reorganized stream, enhanced combustion furnace, to effectively improve the temperature of the entire front region and the arch of the furnace, to reach 1400 degrees, the condition of the fuel to improve ignition. 2. The ignition point of coal in advance, the temperature of the furnace to improve the ash carbon content decreased. Smoke swirling mix and strengthen the separation of coke particles in the flue gas, so that it falls on the fire bed and the new layer further fuel burn. Flue gas also strong swirl in the flue gas CO, H2, CH4 and other combustible combustion gases, thereby improving the thermal efficiency of the boiler is more than 4%. But also improve the boiler output to meet the needs of the production of steam, reducing environmental pollution, expanding the scope to adapt varieties of coal.

To better implement the important speech on the 30th anniversary of the General Assembly Special Economic Zone Xi Jinping, General Secretary Xi Jinping and ecological civilization idea of ​​celebrating to do in Hainan Province, fully implement the "CPC Central Committee and State Council guidance on the full support of Hainan, deepening reform and opening," "CCP central State Council on the overall strengthening of environmental protection and resolutely fight pollution prevention campaign of view "and the spirit of the national Assembly ecological and environmental protection, pollution prevention and resolutely fight tough fight, to promote the construction of national ecological civilization pilot area to ensure the quality of the ecological environment of Hainan can only be more well, not worse, now combined with the actual circumstances of this action.

1, by 2020, the proportion of clean energy installed capacity of more than 60%, to promote low-carbon clean energy priority access. Daly implementation of the "cut cut coal oil" to prohibit new coal, phased out of existing coal-fired units. Before the end of 2020, the province basically eliminated 35 tons of steam / hour and coal-fired boilers.

2, all cities and counties to complete the "high-pollution fuel combustion zone ban" before the end of June 2019 delineation and adjustment. In the combustion zone ban, prohibit the sale, burning polluting fuels. Within the province burning petroleum coke is prohibited. Oil coal quality sampling to establish a regular mechanism.

3, to carry out comprehensive improvement of industrial furnaces, phasing out non-compliance of industrial furnaces, industrial furnace to promote the use of electricity, natural gas and other clean energy or central heating.

4, the full implementation of the construction of urban gas engineering, gas propulsion countryside village "gas on behalf of firewood," to build a gas pipeline network covering urban and rural areas. Demand planning and construction of a number of gas-fired generation projects.

5, to promote the transformation of low nitrogen and ultra-low emissions retrofitting existing gas boiler biomass boilers. Low NOx combustion pollution control measures in new clean energy boiler fueled with natural gas should be used.

Depending on the operating characteristics of electric vertical commercial 6000kg steam boilers, mainly to properly regulate the drum and induced draft fan. The chamber negative pressure is guaranteed ± (5-10) premise mm water column (water column ≈9.8Pa 1mm) to minimize the amount of the wind, to extend the residence time of the flue gas temperature in the furnace, reduce exhaust gas temperature.